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C SENRIGK Ciroumrotary Doors for Cabinets, Gases, 8m.

Patented July 20,1880

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UNITED STATES PATENT OFFICE@ CHARLES SENRIOK, OF ALBANY, NEW YORK, -ASSIGNOR TO OATHARINE SENRIOK, OF SAME PLACE.

CIRCUMROTARY DOOR FOR CABINETS, CASES, 80C.

SPECIFICATION forming part of Letters vPatent No. 230,153, dated July 20, 1880. Application filed February '-7, 1880.

To all whom 'it may concern:

Be it known that I, CHARLES SENRIcK, of the city and county of Albany, and State of New York, have invented certain new and useful Improvements in the Mode of Operating Gircumrotary Doors for Cabinets, Cases, 85e., of which the following is afull and eXact description.

My invention relates to doors arranged to move in pairs in contrary directions in a circular track around a fixed pivotal center 5 and it consists in connecting the two doors together by means of gear-Wheels in the manner herein described, so that by moving either one of them motion is imparted to the other to move it in a contrary direction.

In the accompanying drawings, which form a part of this specication, and to which reference is herein made, Figure l is a horizontal section. at the line x oo, of a case or cabinet containing my improvement, and Fig. 2 a front elevation of same.

A is the case or cabinet; B, the curved doors; C, the center shaft; D, E, and F, arms attached to the doors B G, the gear-wheel, and H the pinion.

The case or cabinet A is made with a semicircular front, and its bottom piece contains a circular groove or track, a, in which theV curved doors move.

The curved doors B are made to conform to the circle of the groove c. At the upper part of each door there is secured an arm, D, provided With a hub, d, which isvbored to t the center shaft, C, thereby holding the doors in their true positions in relation to their pivotal centers. At the lower end of one of the doors an arm, E, is secured, whose inner end is fixed to a gear Wheel or segment, G, which is bored out to t upon, and has a partial revolution around, the center shaft, O. The wheel G engages with the pinion H, which is adapted to receive a partial rotary movement on the stud h. the outer end of which enters an opening in the bracket f, secured to the lower end of the second door. By this arrangement the second door is moved, and the difference in the curvatures of the movements of the door and arm F is compensated for.

The center shaft, C, forms a common pivotal center for the two doors B through the arms D and E. The said shaft may be utilized for the purpose of holding revolving shelves, and when not required for the last-named purpose it (the center shaft) may be dispensed With, and short studs, xed in the top and bottom of the case, substituted therefor, thereby leaving the central body of the case unobstructed.

When either one of the doors is moved in Said pinion is provided with an arm, F, A

either direction (for opening or closing) a si-A CHARLES SENRIOK.

Witnesses A WILLIAM H. Low, C. J. MATTIsoN. 

